I reckon that is the interior lights as the title not the intensity of the virtual cockpit display that is on automatic brightness defined by the diode sensor. You point a bright torch at the diode once you find it and the display changes in brightness. That the preoccupation of boards with that diode on VAG cars.
I believe the infotainment brightness of the console is driven by sensors in mounted in the centre mirror area they scale back the infotainment brightens on mib2 at least but not the central cockpit display. That is an adaption of that setting. That's different from the virtual cockpit.
Saying that this Audi thread has found a button / twiddly knob plus VCDS setting. The cockpit isn't locked down for VCDS on facelifted ones so anybody with real intent can try a bit of VCDS on it. Post 10 on that.
Q5/SQ5 MKII Discussion - Dimming of Virtual Cockpit - I have a 2018 Q5 Prestige. How do I dim the virtual cockpit to a really really low brightness? The minimum brightness setting is way brighter then I would like to have on long night drives (especially when the head-up display is active).
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If the overall control adjusts the virtual cockpit brightness then the VCDS adjustment must fine tune that in relative terms, but if it's completely independent then that fine tunes how the automatic adjustment works.
Don't have the virtual cockpit in the
Ateca. The Arona with it on has never been a
problem in the brightness department.